294 
time until now. 
COLE 
Ives’s description and figures are readily recognizable, 
and besides being able to include the description of the male I have very 
little to add. 
Pycnogonum stearnsi is closely allied to P. Littorale (Strém). 
The prin- 
cipal differences can be seen at a glance in the following table: 
EP. littorate. 
Average length of female about 15 
mm. 
Claw more than half the length of 
the second tarsal joint. 
A smaller conical protuberance on 
the dorsal side of the first trunk 
segment between the one on the 
posterior border of the segment 
and the eye tubercle. 
Ovigera: “Along the inner margin 
of the joints extend a few very 
small and irregularly distributed 
spines of quite a simple form” 
(Sars, ’QI, p. 10). 
LP. stearnsi. 
Average length of female about 6 
mm. 
Claw less than half the length of 
the second tarsal joint. 
No protuberance on the first trunk 
segment between the one on the 
posterior border and the eye 
tubercle. 
Ovigera practically unarmed except 
for a few small spines on the 
outer side of the third joint. 
BIBLIOGRAPHY. 
The following list includes, besides the papers referred to in the fore- 
going pages, the principal references to North American Pycnogonida. 
Boum, R. 
18792 Uber die Pycnogoniden des K6nigl. Zoologischen Museums zu 
Berlin, inbesondere iiber die von S. M. S. Gazelle mitge- 
brachten Arten. 
Monatsbericht der Kénigl. Akademie der 
Wissenschaften zu Berlin, 20, Taf. 1, 11, Februar 1879, pp. 
170-195. 
1879 Ueber Pycnogoniden. 
Sitzungsber. Gesellsch. naturforsch. 
Freunde Berlin, pp. 140-142. 
BRUNNICH, MARTIN THRANE, 
1764 Entomologia (Copenhagen). 
CoLE, LEon J. 
19014 
195-207. 
T9o1> 
Africa. 
Tat. 13, 
Notes on the Habits of Pycnogonids. 
Biol. Bull., vol. 11, pp. 
On Discoarachne brevipes Hoek, a Pycnogonid from South 
Zool. Jahrb., Abth. f. Syst.. Bd. 15, pp. 243-248, 
